Index: src/btree.c
==================================================================
--- src/btree.c
+++ src/btree.c
@@ -8175,10 +8175,17 @@
 ** is read-only, the others are read/write.
 ** 
 ** The schema layer numbers meta values differently.  At the schema
 ** layer (and the SetCookie and ReadCookie opcodes) the number of
 ** free pages is not visible.  So Cookie[0] is the same as Meta[1].
+**
+** This routine treats Meta[BTREE_DATA_VERSION] as a special case.  Instead
+** of reading the value out of the header, it instead loads the "DataVersion"
+** from the pager.  The BTREE_DATA_VERSION value is not actually stored in the
+** database file.  It is a number computed by the pager.  But its access
+** pattern is the same as header meta values, and so it is convenient to
+** read it from this routine.
 */
 void sqlite3BtreeGetMeta(Btree *p, int idx, u32 *pMeta){
   BtShared *pBt = p->pBt;
 
   sqlite3BtreeEnter(p);
@@ -8185,11 +8192,15 @@
   assert( p->inTrans>TRANS_NONE );
   assert( SQLITE_OK==querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK) );
   assert( pBt->pPage1 );
   assert( idx>=0 && idx<=15 );
 
-  *pMeta = get4byte(&pBt->pPage1->aData[36 + idx*4]);
+  if( idx==BTREE_DATA_VERSION ){
+    *pMeta = sqlite3PagerDataVersion(pBt->pPager);
+  }else{
+    *pMeta = get4byte(&pBt->pPage1->aData[36 + idx*4]);
+  }
 
   /* If auto-vacuum is disabled in this build and this is an auto-vacuum
   ** database, mark the database as read-only.  */
 #ifdef SQLITE_OMIT_AUTOVACUUM
   if( idx==BTREE_LARGEST_ROOT_PAGE && *pMeta>0 ){

Index: src/btree.h
==================================================================
--- src/btree.h
+++ src/btree.h
@@ -17,11 +17,11 @@
 #define _BTREE_H_
 
 /* TODO: This definition is just included so other modules compile. It
 ** needs to be revisited.
 */
-#define SQLITE_N_BTREE_META 10
+#define SQLITE_N_BTREE_META 16
 
 /*
 ** If defined as non-zero, auto-vacuum is enabled by default. Otherwise
 ** it must be turned on for each database using "PRAGMA auto_vacuum = 1".
 */
@@ -132,10 +132,15 @@
 **   offset = 36 + (idx * 4)
 **
 ** For example, the free-page-count field is located at byte offset 36 of
 ** the database file header. The incr-vacuum-flag field is located at
 ** byte offset 64 (== 36+4*7).
+**
+** The BTREE_DATA_VERSION value is not really a value stored in the header.
+** It is a read-only number computed by the pager.  But we merge it with
+** the header value access routines since its access pattern is the same.
+** Call it a "virtual meta value".
 */
 #define BTREE_FREE_PAGE_COUNT     0
 #define BTREE_SCHEMA_VERSION      1
 #define BTREE_FILE_FORMAT         2
 #define BTREE_DEFAULT_CACHE_SIZE  3
@@ -142,10 +147,11 @@
 #define BTREE_LARGEST_ROOT_PAGE   4
 #define BTREE_TEXT_ENCODING       5
 #define BTREE_USER_VERSION        6
 #define BTREE_INCR_VACUUM         7
 #define BTREE_APPLICATION_ID      8
+#define BTREE_DATA_VERSION        15  /* A virtual meta-value */
 
 /*
 ** Values that may be OR'd together to form the second argument of an
 ** sqlite3BtreeCursorHints() call.
 */

Index: src/pager.c
==================================================================
--- src/pager.c
+++ src/pager.c
@@ -644,10 +644,11 @@
   u8 eLock;                   /* Current lock held on database file */
   u8 changeCountDone;         /* Set after incrementing the change-counter */
   u8 setMaster;               /* True if a m-j name has been written to jrnl */
   u8 doNotSpill;              /* Do not spill the cache when non-zero */
   u8 subjInMemory;            /* True to use in-memory sub-journals */
+  u8 bUseFetch;               /* True to use xFetch() */
   Pgno dbSize;                /* Number of pages in the database */
   Pgno dbOrigSize;            /* dbSize before the current transaction */
   Pgno dbFileSize;            /* Number of pages in the database file */
   Pgno dbHintSize;            /* Value passed to FCNTL_SIZE_HINT call */
   int errCode;                /* One of several kinds of errors */
@@ -661,13 +662,13 @@
   i64 journalOff;             /* Current write offset in the journal file */
   i64 journalHdr;             /* Byte offset to previous journal header */
   sqlite3_backup *pBackup;    /* Pointer to list of ongoing backup processes */
   PagerSavepoint *aSavepoint; /* Array of active savepoints */
   int nSavepoint;             /* Number of elements in aSavepoint[] */
+  u32 nReset;                 /* Number of calls to pager_reset() */
   char dbFileVers[16];        /* Changes whenever database file changes */
 
-  u8 bUseFetch;               /* True to use xFetch() */
   int nMmapOut;               /* Number of mmap pages currently outstanding */
   sqlite3_int64 szMmap;       /* Desired maximum mmap size */
   PgHdr *pMmapFreelist;       /* List of free mmap page headers (pDirty) */
   /*
   ** End of the routinely-changing class members
@@ -1679,13 +1680,22 @@
 
 /*
 ** Discard the entire contents of the in-memory page-cache.
 */
 static void pager_reset(Pager *pPager){
+  pPager->nReset++;
   sqlite3BackupRestart(pPager->pBackup);
   sqlite3PcacheClear(pPager->pPCache);
 }
+
+/*
+** Return the pPager->nReset value
+*/
+u32 sqlite3PagerDataVersion(Pager *pPager){
+  assert( pPager->eState>PAGER_OPEN );
+  return pPager->nReset;
+}
 
 /*
 ** Free all structures in the Pager.aSavepoint[] array and set both
 ** Pager.aSavepoint and Pager.nSavepoint to zero. Close the sub-journal
 ** if it is open and the pager is not in exclusive mode.

Index: src/pager.h
==================================================================
--- src/pager.h
+++ src/pager.h
@@ -170,10 +170,11 @@
   int sqlite3PagerWalFramesize(Pager *pPager);
 #endif
 
 /* Functions used to query pager state and configuration. */
 u8 sqlite3PagerIsreadonly(Pager*);
+u32 sqlite3PagerDataVersion(Pager*);
 int sqlite3PagerRefcount(Pager*);
 int sqlite3PagerMemUsed(Pager*);
 const char *sqlite3PagerFilename(Pager*, int);
 const sqlite3_vfs *sqlite3PagerVfs(Pager*);
 sqlite3_file *sqlite3PagerFile(Pager*);

Index: src/pragma.c
==================================================================
--- src/pragma.c
+++ src/pragma.c
@@ -152,10 +152,16 @@
   { /* zName:     */ "data_store_directory",
     /* ePragTyp:  */ PragTyp_DATA_STORE_DIRECTORY,
     /* ePragFlag: */ 0,
     /* iArg:      */ 0 },
 #endif
+#if !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS)
+  { /* zName:     */ "data_version",
+    /* ePragTyp:  */ PragTyp_HEADER_VALUE,
+    /* ePragFlag: */ PragFlag_ReadOnly,
+    /* iArg:      */ BTREE_DATA_VERSION },
+#endif
 #if !defined(SQLITE_OMIT_SCHEMA_PRAGMAS)
   { /* zName:     */ "database_list",
     /* ePragTyp:  */ PragTyp_DATABASE_LIST,
     /* ePragFlag: */ PragFlag_NeedSchema,
     /* iArg:      */ 0 },
@@ -469,11 +475,11 @@
     /* ePragTyp:  */ PragTyp_FLAG,
     /* ePragFlag: */ 0,
     /* iArg:      */ SQLITE_WriteSchema|SQLITE_RecoveryMode },
 #endif
 };
-/* Number of pragmas: 57 on by default, 70 total. */
+/* Number of pragmas: 58 on by default, 71 total. */
 /* End of the automatically generated pragma table.
 ***************************************************************************/
 
 /*
 ** Interpret the given string as a safety level.  Return 0 for OFF,

Index: tool/mkpragmatab.tcl
==================================================================
--- tool/mkpragmatab.tcl
+++ tool/mkpragmatab.tcl
@@ -252,10 +252,16 @@
   NAME: user_version
   TYPE: HEADER_VALUE
   ARG:  BTREE_USER_VERSION
   IF:   !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS)
 
+  NAME: data_version
+  TYPE: HEADER_VALUE
+  ARG:  BTREE_DATA_VERSION
+  FLAG: ReadOnly
+  IF:   !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS)
+
   NAME: freelist_count
   TYPE: HEADER_VALUE
   ARG:  BTREE_FREE_PAGE_COUNT
   FLAG: ReadOnly
   IF:   !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS)